RFR: 8266936: Add a finalization JFR event [v11]

Coleen Phillimore coleenp at openjdk.java.net
Thu Sep 23 22:38:52 UTC 2021

On Mon, 13 Sep 2021 17:12:49 GMT, Markus Grönlund <mgronlun at openjdk.org> wrote:

>> Greetings,
>> Object.finalize() was deprecated in JDK9. There is an ongoing effort to replace and mitigate Object.finalize() uses in the JDK libraries; please see https://bugs.openjdk.java.net/browse/JDK-8253568 for more information. 
>> We also like to assist users in replacing and mitigating uses in non-JDK code.
>> Hence, this changeset adds a periodic JFR event to help identify which classes are overriding Object.finalize().
>> Thanks
>> Markus
> Markus Grönlund has updated the pull request incrementally with two additional commits since the last revision:
>  - remove rehashing and rely on default grow_hint for table resize
>  - mtStatistics

src/hotspot/share/jfr/periodic/jfrFinalizerStatisticsEvent.cpp line 26:

> 24: 
> 25: #include "precompiled.hpp"

With precompiled headers turned off, this gets a compilation error:
error: "INCLUDE_MANAGEMENT" is not
 defined, evaluates to 0 [-Werror=undef]


PR: https://git.openjdk.java.net/jdk/pull/4731

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